Alex Turpin, A. Vargas, Angel Lizana, F. A. Torres-Ruiz, Irene Estévez, Ignacio Moreno, Juan Campos and Jordi Mompart
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A (2015)
We present both experimentally and theoretically the transformation of radially and azimuthally polarized vector beams when they propagate through a biaxial crystal and are transformed by the conical refraction phenomenon. We show that, at the focal plane, the transverse pattern is formed by a ring-like light structure with an azimuthal node, this node being found at diametrically opposite points of the ring for radial/azimuthal polarizations. We also prove that the state of polarization of the transformed beams is conical refraction-like, i.e., that every two diametrically opposite points of the light ring are linearly orthogonally polarized.